Frontenac was a steamboat, the first paddle steamer launched on the Canadian side of the Great Lakes, in 1816.

Built in Ernesttown, Ontario, by American contractors for Kingston businessmen during 1816 at a cost of £15,000, she entered service in spring 1817.

Frontenac conducted regular runs across Lake Ontario between Kingston, York (now Toronto), and Niagara-on-the-Lake.

Frontenac typically generated about 50 horsepower (using the original Boulton and Watt formula), which was too little for a ship of her size, and she was often outperformed by sailing craft.

Frontenac was sold for £1550 to John Hamilton in 1824, who persisted two more unsuccessful years before selling her for scrap at Niagara in 1827.